* {
  box-sizing: border-box;
}
html,
body {
  height: 100%;
  margin: 0;
}
#app {
  width: 100%;
  height: auto;
  max-width: 520px;
  background-color: #fff;
  margin: 0 auto;
  min-height: 100%;
  padding: 18px;
}
.banner {
  width: 100%;
  height: 160px;
  position: relative;
  background-image: url(../img/vip.jpg);
  background-repeat: no-repeat;
  background-size: 100% 100%;
  padding: 15px;
}
.content {
  padding-top: 12px;
}
.content > h3 {
  margin: 8px 0px;
  color: rgb(48, 49, 51);
  font-weight: bold;
  font-size: 1.07em;
}
.content .input {
  padding-top: 15px;
  display: flex;
  flex-direction: column;
  gap: 15px;
}
.desc {
  padding-top: 15px;
}
.desc .title {
  font-size: 0.9em;
  margin: 4px 0px;
}
.desc .msg {
  font-size: 0.75em;
  line-height: 18px;
}
.none {
  display: none;
}
